Trolley.



L. J. TETLOW.

TROLLEY.

APPLICATION FILED MAR. 28, 1912 Patented De0.3,1912.

INVENTOR,

A TTORNEY.

IINITEM STATES PATENT EI IQE,

LEWIS J. TETLOW, OF "WEST SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO UNIVERSAL TBOLLEY WHEEL COMPANY, OF NORTHAMPTON, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS.

To all whom it may concern:

Be it known that I, LEWIS J. TETLow, a citizen of the United States of America, and resident of Vest Springfield, in the county of I-Iampden and State of Massachusetts, have invented certain new and useful Improvements in Trolleys, of whlch the following is a full, clear, and exact descrlption.

This invention relates to improvements in trolleys for electric railway cars, and its object is to provide a means for the retention and saving in the harp of the united pair of contact springs in cases, comparatively frequent considering the large number of trolleys in use, of the loosening and d1splacement of the axle and the loss of the trolley wheel.

To this end the invention consists in the combination or arrangement of parts and the construction of certain of the parts all substantially as hereinafter described and set forth in the claim.

In the drawings :Figures 1 and 2 are a vertical longitudinal sectional view centrally through the improved harp from top to bottom thereof, and a side elevation, respectively,line 11 on Fig. 2 indicating the plane on which the sectional view is taken.

In the drawings, A represents the trolley harp having the opposed upstanding jaws or cheeks a a substantially as usual, and the harp as will be especially perceived is made at the lower portion thereof adjacent the base of the aws with opposite walls or members b 5 formed with alined perforations (Z (Z therethrough.

The harp is to be made of any suitable inexpensive metal, such as malleable iron, and the jaws thereof are made with circular apertures f f therethrough, receiving therein hardened steel annular bushings g engaged with a hard driving fit in the apertures.

B represents the axle pin closely fitted through the annular bushings g g and retained by the cotter pins 72. it which are in- Specification of Letters Patent.

Application filed March 28, 1912.

TROLLEY.

Patented Dec. 3,1912,

Serial No. 686,764.

serted in holes drilled through the harp jaws, the bushings and the axle at right angles to the length of the latter.

D D represent a pair of contact springs united to each other at their lower portions by the bolt or rivet 2' having heads or shoulders at their outer ends, the extremities of the contact springs engaged or held by the bolt or rivet being encircled by a spiral spring j reacting oppositely against the contact springs in outward directions so that such springs at intermediate portions 72 76 thereof have yielding bearings against the inner faces of the harp jaws, the extremities of the springs as usual embracing the axle and bearing on the ends of the hub portion of the trolley wheel G. The paired springs joined at their lower portions and yielclingly reactive outwardly are substantially such, and employed for the advantage, as set forth in an application for. Letters Patent of the United States filed by me May 11, 1911, Serial No. 626,745.

L represents a pin engaged through the aforementioned perforations cl cl in the members 7) b at the base of the harp which are arranged at right angles to approximately vertical surfaces of the harp jaws. This pin is one of a self retaining character for use in the situation shown, and is preferably a spring pin or cotter pin.

- In case the axle should become broken, or its connections unfastened and such axle and the wheel lost from the harp, the paired and bottom united springs which are unattached relatively to the harp would still i be retained from being lost from the harp by the part cZ here provided for such purpose.

I claim In combination, a trolley harp having opposed upstanding jaws, and having at the lower portion thereof upstanding opposite members in planes at right angles to the jaws and formed with alined perforations horizontally therethrough, an axle supported by the harp jaws, and a trolley wheel mounted on the axle, a pair of contact springs united to each other at their lower space above the place of union of the pair 10 portions, the extremities thereof embracing of contact springs.

the axle and bearing on the ends of the Signed by me at Springfield, Mass, in hipb porition, springls taeing cpriiattachlild presence of two subscribing Witnesses.

re ative y tot e iarp an a apte 'or yie ing bearings at intermediate parts thereof LEWIS TETLOW' against the inner faces of the harp jaws, and Witnesses:

a pin engaged through the perforations-0f G. R. DRISCOLL,

said opposed members and traversing the WVM. S. BELLOWS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

